sherman and vv



J. A. SHERMAN AND W. H. SHEPPARD.

V MEANS FOR SECURING FUEL COMBUSTION.

APPLICATION FiLED SEP 191 1919,

1,382,391 Patented June 21,1921.

4 SHETSSHEET 1.

J. A. SHERMAN AND W. H. SHEPPARD.

MEANS FOR SECURING FUEL COMBUSTION.

APPLICATlON FlLE D SEPT. 9, 1919- 38%391 Patented June 21, 19231 4 SHEETS-SHEET 2.

J. A. SHERMAN AND W. H. SHEPPARD.

MEANS FOR SECURING FUEL COMBUSTION.

APPHCAHON HLED SEPT.9.19|9. 3,382,339 1. Patented June 21, 1921.

4 SHEETSSHEET 3.

J. A. SHERMAN AND W. H. SHEPPARD.

MEANS FOR SECURING FUEL COMBUSTION.

APPLICATION HLED SEPT. 9, 1919.

Pmbemeii J 11116 2.1,. 192

4 SHEETSSHEET 4.

I filllbly of fuel oil, the operation oi the 3'3- biicibioii, oi which the :following is a specilioa .i patent application Serial f filed 3 Lily 8., 1918, by us there 1 automatic system oi? hezztmg by :3 oehrlen'l; upon an electric mover am being;

l1! 7 o 1 T and mo iii 0 loicircuit hem comm DllQU. in e :1 themioshitio stem.

humei' as there shown and described chews up fuel from a ion}; by oil, outoiiezilic means are provided for iiiziintziini115; the levelo}? the fuel in the tank, the tank lieiiig 'fBk'l lt oin a re voir and. :i ball cock of oidiiieiyconstrue 1011 being PEOViilGCl in the 1: whereby supply will he cut off when lzhe level reaches :1 CPAQZLiD "point.

0m present improvement, while it releizes to a homer which is fed. as before comprises also ll, positive feedlfoi" the huiiiei" tank and also saf ty means which returns the source of supply any surplus feel so that in combination El llll the controlling valve the burner will not be coiled with fuei.

Uiiiinvention ll he omieretoocl o i'e'feieice to the drawings, in Which-- Y 1 ii fro?" eleveizioii,

T 2 a, side elevation.

Fig. 3 a top view of mechanism embodying our iiiveiiiioo and 4i :1 vertical section, ciilaigerl, showing; the valve, the vaive chamber, homer supply tank and homer nioui'ited thereon. As this present inven'lion relates to the el feed and CllCillfilllm'l, the electric connei UlUDS are too show which is con-- iii -lii LC motor closin the valve.

Li le. 3223:32 3

ieri'od to the pumps only being operated when the inocoi' CllQUli) is clceecl and the feel being fed. to the homey only when the temperature of the house requires; it and open ates the thermostat as desei'ibecl in seicl applice'eioii.

The fuel from the pump B is fed ifihrough pipe 5 which has a pressure E, and from. the upper end of pipe 5 by a pipe e 330 ii chamber l?- oelow the valve chamber F, (See Fig. l.) This ljllilfi'llJBB. l is supporiied on a bracket F in the top the chamber F is set a valve seat 7"" having projecting above it a guide 7 in which rune valve G, this guide liziviogopciiihge f into the chain-- her at of proper siee iO'llS) zincl fl. is a 1? fall with the level of the oil iii the chamber F. The valve lOLl passes through s'zliis float (see Fig. l) and carries at itsrupper end 21' grooved collar 7 in which fit the two ends of levers g mounted in hangers 5/ depending from the cover F of the chamber F. The cute ends of these levers g are Weighied. as at and on the floai H so that the levers acting through the collar 9 tend to lift the valve off its seat and films admit oil to the chamber from the pipe 6 and chamber F As 16 oil me chaiiibcr', however, the float rises and lifts the ends 5 of the levers thus depressing: the valve rod and From ie chamber F "the s to the iiiiei'ioi of the tank K by fuel 51c pipe oil.

[is (lescrihecl in said application, the humor 5 is mounted on the llillllK K. It is connected with the air pump D by means of ihe pipe (1 and pipe (Z It may also be connected by the pipe 9 with an air chamber Q clooecl at its iqvpei: end by a diaphragm g which carries a terminal 36. This pipe contains :1 tlii'otfle valve Q hy which the posof air may be controlled as in ihe said application zihrl also is connected lo i gage- Q in insulaled jvolce piece or strip carries a "G'Y'Ml icjmiiml this clmmhev fulfillin 1O fiiii lion of the ari Q in Silllji n .encl lhe terminals oeirlomiino; ions oi the parts 29 and of saiel ,i n. being" zlie tliei'inostnt in oi?- h 39 moi 30 coal cooholleil b}? the ore of the fire box. and y) being; "he

is blow-off valve for ehe can pipe 6 with the reservoir A so that if the chamber F is filled and the valve-G closed the oil in pipe Q will back up, opening valve e and passing by pipe 6 back to the reservoir A.

The burner J comprises a casing j having a nozzle j with a jet opening The compressed air pipe 65 connects with an air chamber j within the casing j which is connccted by the passage with the tank K. Within the casing J is mounted an oil feed tube K closed at its rear end and carrying at its forward end a nozzle 70. 70 shows an opening by which the interior of the tube K is connected with the passage 10 the lower end of which carries a tube 71: running nearly to the bottom of the tank K. The size of the mixing chamber between the interior of the nozzle 3 and the end of the nozzle is may be adjusted by moving the part K within the casing J, the opening in sing suiiiciently large to allow the adjustment of K without closing the passage to the tank K. The casing J carries a stutiing box at its rear end through which the thread ed rear end'of h progects. if 1s a groove in the solid part of K and k is a screw the end of which sets into is and prevents thepart from turning. A cap-shaped nut is is attached to the rear end of J to turn thereon and by turning it the part K may be caused to advance toward the opening j thus en larging the opening between the oil tube K and the casing J at the V-shaped end and making the mixing chamber at the end of tube K smaller, or it may be withdrawn making it larger, as desired. 1,}.

In the operation of this burner, airuurl er pressure from the air pump passes through the pipe (i into the chamber j and rushing out through the opening 7' tends to suck up fuel from the tank K through the passage N at the same time establishing a pressure through j on the surface of the oil in tank K tending to equalize it or slightly increase it over the pressure in the mixing chamber at the opening which relieves the pressure at this point creating suction I which causes the oil to flow upward into the burner to the mixing chamber, thence through the opening j when it'comcs in contact with pilot light causing it to burst into a flame.

It is desirable that the air pressure in the tank K and chamber F should be equal. A pipe L connects the chamber in tank K with the chamber l above the normal oil level so that air pressure exerted through the pas sage j" will spread from the pipe L into the chamber l and the air pressure on the two surfaces of the oil will neutralize each other.

S is a slab of insulating material such as weasel will be clear when considered in connection with the operation. of the device shown in said application. We shall oiily give the operation of the fuel supply system. The motor on starting up operates both the air pump and the oil pump, and the oil is pumped over into the chamber F and from thence it passes through the pipe M into the tank K. In the meantime the air pressure. gradually increases passing into the chamber in the upright Q slowly because of the adjustment of the throttle valve Q and in a moment or so closing the electric circuit between, at 29 and 30, after the circuit is broken at P and also passing over by pipe d to the burner tanks, causing the feeding of oil to the burner and atomizing the oil, and also supplying pressure to the surface of the oil in K and to the chamber F by pipe L. In the meantime the pilot burner p ignites the mixture of air and oil at the nozzle opening j If the flow of oil through 6 into F or its connections does not cease for any reason as it should the oil will flood the burner and extinguish the flame when the thermostat P will operate as described in said application. If there is more oil pumped into the chamber F than enough to supply the burner the'float H rises and closes the valve, which causes the surplus to back up in pipe (2 through the valve e and pipe e into the reservoir A.

As in our said application, if the connection were made at 29 and 30 while the thermostat at the fire box was closed, the motor circuit would be broken and the device would hecome inoperative.

lVe do not mean to limit ourselves to the precise construction shown, our present invention relating broadly to a burner to which oil is fed positively, from which it is cut off automatically, with means to take care of excess fuel pressure should there be any.

What we claim as our invention 1s 1- 1. That improvement in a heating system which comprises a fuel reservoir, an atomizing burner, a fuel tank to supply fuel thereto, a compressed air supply and means whereby it will atomize fuel at said burner, a connectionbetween said fuel reservoir and said burner comprising a relief valve, and a second connection between said relief valve and said reservoir, whereby when fuel is fed to said burner at a pressure greater than that of the compressed air it will open said relief valve and flow back to said reservoir.

2. In a heating system, a fuel reservoir, a burner tank, a burner connected therewith, a compressed air supply connected to said. tank and adapted to supply fuel therefrom to said burner, fuel-carrying connections between said burner tank and said reservoir comprising a relief valve, whereby fuel fed. to said tank at a pressure loss than the-air surplus fuel Will open said relief valve ancl pressure therein will open said relief vaive and any surplus of fuel will pass back in said reservoir.

3. In a heating-system, a fuel reservoir, a burner tank, a burner locat'e above said tank and connected therewith, and fuel-carlying connections betweea said reservoir and said tank comprising'a pump and a relief valve, and a compressed air feystem connected to said burner and to said burner tank whereb said air system may feed and atomize sai fuel at said burner and any pass back to said reservoir.

4-. In a heating system, a fuel reservoir, a burner tank, fuel-carrying connections beisiveen said reservoir and said tank compris ing a fuel pump, a burner having a com pressed air chamber connected with its nozzle, said burnerbeing located above said tank and connected therewith, a compressed air system adapted i0 supply compressed air to the air chamber in said burner and to the surface ofthe fuel in said tank, whereby the fuel in said-tank will flow, up into and be atomized through the nozzle of said learner aim" a relief valve locaeeci aaiel fueimarrying conneciioii and said burner tank and connected to reservoir and adapted to relieve extra nary pressure in said connection. ai ol a the escape of surplus oil. back voir,

5. In a heating system, a iue'i reservoir, a burner tank, a fuel gump located between said reservoir and seio tank, a valve seeing; comprising a chamber, float valve iocaied. in vsaid; chamber, fuel-carrying conneciions between said reservoir, saicl pump and said chamber, and controlled by said vaive, e 4e fuel-carrying connection between saixi chamloci and said tank, a burner ic said tank and a compressed air a; fie nected to said burner and the upper par, said cank and said chamber and feed said burner with fuel atocf. aiomi 1E and to maintain a preesure on the upper face of the fuel in said tank and said chem loci: greater than the normal pi'eeaciee oi said fiael. JOHN A. SHERMAN.

W1 'LLEKAM SHWPA f 

